Photographic camera control circuitry

Details Photographic camera control circuitry Photographic camera control circuitry

1978-02-03

1979-07-17

Hix, L. T.

354 60R, 354238, 354267, G03B 708, G03B 964

Patent

active

041613554

ABSTRACT:
In a photographic camera control circuitry which energizes an electromagnetic means for initiating a camera operation or an exposure sequence, measures brightness of the scene to be photographed and controls exposure time automatically in accordance with the scene brightness measured and stored in a storing device, a sequence control circuit arrangement includes a first energization circuit responsive to a closure of a release or trigger switch to at first energize the light measuring circuit and a delay circuit which outputs a signal after a lapse of given time from the closure of the release switch, and further includes a second energization circuit for energizing the electromagnetic means and an exposure control circuit in response to the signal from the delay circuit.

REFERENCES:
patent: 3961342 (1976-06-01), Maida
patent: 4003063 (1977-01-01), Takahashi et al.
patent: 4015198 (1977-03-01), Iwashita et al.
patent: 4069489 (1978-01-01), Matsuda

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